like a child in a sweet shop
like a child in a sweetshop
So excited about one's surroundings that one acts in a childlike or silly way. Primarily heard in UK. Liam loves football so much that he's like a child in a sweetshop any time he steps into the stadium. She looked like a child in a sweetshop being able to look at so much world-class art in one place.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
like a child in a sweet shopBRITISH
If you are like a child in a sweet shop in a particular situation, you are very happy and excited because of something you can do or have, and often behave in a greedy or uncontrolled way. With so many options before me, I was like a child in a sweet shop. Note: The usual American expression is like a kid in a candy store.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012